Improvement in wagon-brakes



J.R0BIN.SON

Wagon Brake. No. 109,761. Patented Nov. 29,1870.

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N FIEYERS, PNUTO-LITNOGRAPHER, WASHINGTON. D C.

JAMES ROBINSON, OF SEDALIA, MISSOURI, ASSIGNOR TO GEORGE SOHEERK Letters Patent No. 109,761, dated November 29, 1870.'

lMPROVE ME NT IN WAGON-BRAKES.

, The Schedule referred to in these LettersPatent. and of the same.

To all whom it may concern Be it known that I, JAMES ROBINSON, of Sedalia, in the county of Pettis andr State of Missouri, have invented new and useful Improvements in Wagon- Brakes; and Ido hereby declare that the following is a-full, clear, and exact description thereof, which will enable others skilled in the art to make and use" the same, reference being bad to the accompanying drawing forming part of this specification.

This invention relates to improvements in wagonbrakes; and

It consists in an arrangement of the brake-blocks onseparate levers, monnted'so that the blocksmay be drawn under thebox when released from the wheels, to prevent an accumulation of mud on them, and to be thrown out again previous to being forced onto the wheels, by a combination, with the said levers and the ordinary brake-operating lever, of apparatus for so operating the brakes bythe said lever when applying or releasing the brakes.v

Figure 1 is a side elevation of a wagon. provided with my brake apparatus, and

Figure 2 is a plan of the bottom of the same.

Similar letters of reference indicatecorresponding parts.

A and B represent the bars or levers on which the blocks or shoes Gare mounted.

They are arranged at the under side of the box,

parallel with each other or nearly so, insupporting guides D E, which hold them up snugly against the bottom of the box, but admit of their sliding out and in and vibrating as required for applyingfand re: leasing the blocks.

These guides have pivot-pins E passing through them, and the levers have long staples 'G, through which the pins pass, whereby the levers may both vibrate on these pins and slide back and forth, the pins serving for fulcrums for the levers. v v v The said levers are connected together by a link or bar, H, jointed to each, and lever A has a cranked lever, I, pivoted. to it, which has an arm, K, extendingacross lever B, which arm has a-long slot, L, in which a pin,-M, projecting from lever B, works.

The arm of this lever, which is perpendicular to the slot or nearly so, is connected by a rod, N, with a lever, .O, pivoted to the bottom of the box, near the front, so that one end, P, which is notched or forked, projects from under the box at one side to receive'the lower end of the brake-actuating lever 1?, when moved .forreleasing the brakes from the wheels, said lever being connected by red Q with the free end of brake bar B for forcing the shoes against thecwhels.

When this lever P is moved backward at the lower end to apply the brakes, it moves the lever 0 during the first part of its movement, andthe. latter, swinging the cranked lever I, throwsthe brake-bars A B outward so as to bring the shoes in front of the wheels v before they are-forcedupon them by rod G, which is connected to bar B by a hookedend, T, which moves away from the said bar when the brakes are thrown oil the wheels, sov that the lever P ,may be moved some distancefin throwing. on the brakes before the lever'Bwill be moved;

When the-brakes are moved out endwise the lower end of lever Pes capes from the forked end of lever 0, andthe niovementsof said lever O and the parts actuated by it cease. This takes place at or about the time the bar B is s'etin motion by rod G.

In throwingthe brakes out of action the forward movement of the lower end of lever P brings it in contact with the forked lever O, by which the cranked lever I is thrown back so as to draw the bars A B and the brake-blocks under the wagon again:

The action'of the lever I on the bars A B also has the effect to swing'the shoes away from the wheels, but this is mainly done by a spring, U, which bears against the inner end of lever A.

;Itwill be seen that, by this arrangement, the ends I i I of the brake-bars and the shoes thereon are not exposed, when notin use, at 'thesides'of the box, to

accumulate mud from the wheels, which in some soils is of such a character as to greatly load the wagons, and any mud accumulatingthere when the-brakes are out will bescraped 011 when they are withdrawn.

Having thus described my invention,

I claim as new and desire. to secure" by Letters Patentj I 1. The arrangement of the brake-shoe supportingbars or levers herein shown, for moving under the box when released from the wheels and out again when ap# plied to the wheels, substantially in the manner speci-' fied,

2. The combination, with the brake-lever'for fore:

ing the brakes upon the wheels and the brakes arranged to slide under and out from under thebox, of

the cranked slotted lever I, rod N, and forked leverO, ail substantially as specified p JAMES 2 noemson.

mark.

Witnesses MARTIN REILLY, E. WM. LIEBMANN. 

